SUZUKI XL7 TERMINAL PROBLEM

2004 Suzuki XL7 • 120,000 miles

Hello. I have a 2004 Suzuki XL 7. I am havind an issue with code with DTC P0449: Evaporative Emission System Vent Valve/Solenoid Circuit. I replaced the part, cleard the code and the code keeps coming back after I restart the car. I got a smoke test conducted on the emission system, and the only leakage found is around the filter part number 18581-65d00 and where the hose connection is made to the filter. In speaking with the mechanic, he stated that leakage in that area is normall and that should not give the falut code. Can you help me understand if the filter could be the root cause of the code? Is the filter suppose to bleed or is it suppose to maintain a leak proof system? As a reference I am looking at the suzuki 2004 xl7 part's catalog figure 23 page 27.

I believe they conducted a very extensive leak test. They kept the car for a couple of days, and told me the only area where leakage was present was where the filter was located. Granted, I was there when the tet was done. If you would like, I can contatct the shop and ask specifics about the test.

In addition, in speaking with the mechainc, he was very baffled as to why the code was coming back. As a guess, he said it could be the purge valve, but then the purge valve would carry their own fault code p0445 if I am not mistaken.

Understand. I am on my way to do a diagonostic now. I have seen on this forum where a simple test can be conducted to determine the voltage from the PCM. According to this forum and the shop manual (which are basically the same) the C51-2-18 terminal should exhibit a 10 to 14 Volt reading.

The steps are outline below. Keep in mind this is without the use of what the manufacture calls a Suzuki scan tool. I guess they figure not everyone will have that scan tool. I know I don't and I have priced one and they are quite expensive.